for i in "hello":
    if i == "e":
        break
    print(i)
print("------------------------")


for i in range(3):
    user_name = input("请输入用户名：")
    pwd = input("请输入密码：")
    if user_name == "htl" and pwd == "88888888":
        print("系统正在登录中，请稍后......")
        break
    else:
        if i < 2:
            print("用户名或密码不正确，您还有", 2-i, "次机会")
else:
    print("三次输入均错误！")



